The dynamic range of natural scenes can be very wide, spanning several orders of magnitude from dazzling sunlight to faint starlight. Most camera systems can only capture a very narrow dynamic range, which is often reflected in the fact that we get a picture with over-exposed or under-exposed regions. To address aforesaid limitation, many high dynamic range (HDR) imaging techniques have been developed. One way is to use a specialized camera to capture HDR images [1]}, [2]}.
However, the cost of using these devices is high for general consumers.
Another common strategy is to use an exposure bracketing with different exposure values (EV) to compose the final HDR image [3]}, [4]}, [5]}. These approaches work well for static scenes, however, when the scenes have moving objects or the camera is slightly displaced, these methods suffer from severe ghosting artifacts [see Fig. REF (b)].
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